Patch 'b8efdaf USB: EHCI: add check for wakeup/suspend race' adds a check for possible race between suspend and wakeup interrupt, and thereby it returns -EBUSY as error code if there's a wakeup interrupt. So the platform host controller should not proceed further with its suspend callback, rather should return immediately to avoid powering down the essential things, like phy. Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Cc: Hauke Mehrtens <hauke@xxxxxxxxxx> Cc: Hans de Goede <hdegoede@xxxxxxxxxx> --- Based on 'usb-next' branch of Greg's usb tree. drivers/usb/host/ehci-platform.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index b3a0e11..60d3d1a 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -303,11 +303,13 @@ static int ehci_platform_suspend(struct device *dev) int ret; ret = ehci_suspend(hcd, do_wakeup); + if (ret) + return ret; if (pdata->power_suspend) pdata->power_suspend(pdev); - return ret; + return 0; } static int ehci_platform_resume(struct device *dev) -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
